(D)

    Readers (《朗读者》) is a popular TV show in China. It invites (邀请) people to read aloud (大声地) on the stage (舞台). The show also tells moving (感人的) stories behind those people. They can read everything, like poems (诗), books, and letters.

    Many people are fans of the show. They begin (开始) to enjoy reading aloud at home.

    Now, the show gives people a place to read. It is a reading pavilion (朗读亭). It showed up in cities like Shanghai, Hangzhou and Xi'an. Let's have a look!

    The pavilion is not very big. Only (只有) one person can come into it each (每一) time. There is a microphone (麦克风) in it and it records (记录) people's voices.

    Everyone can read for three minutes in it. You can read anything you like. The show will pick (挑选) some of the readers and invite them to read on TV.

    Lots of people come to the pavilion to read. Yu Duohan is an 11-year-old girl from Shanghai. She read the story Take a Snail for a Walk (《牵一只蜗牛去散步》). "I love reading aloud," she said. "It makes the story become more beautiful."

    The pavilion will also come to other cities across the country (国家). You can read your favorite stories in the pavilion soon.

煤是重要的能源，也是化工生产的重要原料．

（1）煤燃烧产生的废气直接排放到空气中，可能导致的环境污染问题是 ____．

（2）下图是对煤燃烧产生的废气进行常温脱硫处理的流程示意图．

①废气脱硫过程中，主要反应的化学方程式为 ____ ____

②在煤中直接添加一种物质，可有效减少煤燃烧产生的SO₂，该物质是 ____

③石膏在工业生产中的用途是 ____（写出一种用途即可）．

（3）煤经过 ____（填加工方法）可以得到炉煤气、煤焦油和焦炭．煤焦油经过 ____（填加工方法）可得到芳香族化合物．煤也可以用氢化法转化成燃油，氢化法的本质是 ____